Originally Posted by RevMaynard
Odd, I'm making the same with an AEM CAI and AMS STX300 e-tune, everything else bone-stock and on 91Octane.
Who did the tune? Do you have other options. Great parts, not exactly great results.
I agree, and would have expected better numbers. I was making 390whp (mustang dyno) with e85, OEM downpipe/manifold and stock turbo. I know you aren't on e85, but you did upgrade your turbo. Could have been an incredibly low reading dyno, but I would probably be looking for another tuner.